If you may recall he was finally given full human status by accepting death. There are groups out there like Humanity+ who believe in enhancing the human body and mind by genetic and technologically means, but I disagree with tampering with the natural process of evolution. Some propose tampering with the human form to make people better able to work in specific environments, but ethically speaking we would be creating a slave class.
There was also a point in the movie ("Bicentenniel man") that his human wife almost expressed a desire to die. Although physically she could have lasted a lot longer she stated the following "There is a order to things, humans are only meant to be here for a time, then move on." It was almost as though she had something in her internal clock telling her to move on, or maybe she was just getting a little sick of living for all those years.
SigurdV, I haven't given much thought to that far out. When the last star finally burns out it's going to be a very eerie silence.